公开(公告)号：US09938227B2

公开(公告)日：2018-04-10

申请号：US15526868

申请日：2014-11-17

Applicant: DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES

Inventor： Youming Ni ,  Wenliang Zhu ,  Yong Liu ,  Hongchao Liu ,  Zhongmin Liu ,  Lina Li ,  Shiping Liu ,  Hui Zhou

IPC: C07C69/00 ,  C07C67/39 ,  C07C67/00 ,  C07C69/06 ,  C07C41/50 ,  C07C43/04 ,  C07C43/30 ,  B01J39/05 ,  B01J29/08 ,  B01J29/18 ,  B01J29/40 ,  B01J29/65 ,  B01J29/70 ,  B01J31/10 ,  B01J39/20 ,  C07C41/18

CPC classification number: C07C67/39 ,  B01J29/084 ,  B01J29/18 ,  B01J29/40 ,  B01J29/65 ,  B01J29/7007 ,  B01J29/7038 ,  B01J31/10 ,  B01J39/05 ,  B01J39/20 ,  B01J2231/50 ,  B01J2231/70 ,  C07C41/18 ,  C07C41/50 ,  C07C43/04 ,  C07C43/30 ,  C07C67/00 ,  C07C69/06

Abstract: Method for preparing methyl formate and coproducing dimethyl ether by reacting a formaldehyde and methanol raw material (molar ratio range of 1:4 to 1:0.05) in a First Reaction Region at ranges from 50° C. to 100° C. with Catalyst A resulting in post-reaction material separated into Constituent I. Reacting Constituent I in a Second Reaction Region at ranges from 50° C. to 200° C. and from 0.1 MPa to 10 MPa with Catalyst B resulting in post-reaction material, which is separated into methyl formate, dimethyl ether and Constituent II. At least 1% of dimethyl ether is product, and recycling the rest to the First Reaction Region. Constituent II is recycled to the Second Reaction Region. Each component is gaseous phase and/or liquid phase, independently. The method shows long catalyst life, mild reaction condition, high utilization ratio of raw materials, continuous production and large scale industrial application potential.